<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<div id="app">
		<div class="box">
			<a href="" class="a">aa</a>
			<a href="" class="b">bb</a>
		</div>
	</div>
	<script src="node_modules/jquery/dist/jquery.js"></script>
</body>
</html>